devicelist = \
    [{'name':'SW1','ip':'203.0.113.1','username':'qytang','password':'qytang','platform':'IOS'},\
     {'name':'SW2','ip':'203.0.113.2','username':'qytang','password':'qytang','platform':'IOS'},\
     {'name':'SW3','ip':'203.0.113.3','username':'qytang','password':'qytang','platform':'VRP'},\
     {'name':'SW4','ip':'203.0.113.4','username':'qytang','password':'qytang','platform':'VRP'}]


